Doorknob



Jan. 2l, 1930.

E. ELLINGSON DOORKNOB Filed F'eb. 8, 1928 Patented Jan. 21, 1930 .UNITEDSTATES ELLING ELLINGSON, OF SAN FRANCISCO, CALIFORNIA DOORKNOBApplication led February 8, 1928.

My invention relates to improvements in door knob construction whereinglass rosettes and knobs may be efficiently mounted and held upon a knobstem to obtain a simple and eiiicient structure presenting an attractiveall-glass appearance.

The primary object of my invention is to provide an improved door knobconstruction and assembling mea-ns. lo Another object is to provide animproved construction which will afford simplified means for securingglass knobs upon the ends of a knob stem and which will eifectivelysecure the knob and stem against turning rela- `tive to each other andimpart positive turning movement from one to the other.

A further object is to provide an improved device of the characterdescribed which will permit use of glass rosettes to obtain a more.ittractive outward appearance and provide a knob having an all-glassfinish which may be more easily kept clean and sanitary.

A still further object is to provide an improved device which is simpleand economical in construction and efficient in operation, and

which may be quickly and easily installed or taken apart.

I accomplish these and other objects by .i means of the improved devicedisclosed in the I drawings forming a part of the present applicationwherein like characters of reference are used to designate similar partsthroughout the specification and drawings and in t which y Fig. 1 is abroken sectional view of my improved door knob construction as installedupon a door;

Fig. 2 is a view of the inner end of the -fknob; Fig. 3 is a view of theinner end of a rosette;

Fig. 4 is a plan view of the knob engaging washer;

Fig. 5 is a plan view of a bearing plate; and

Fig. 6 is a view of the outer end of a bushing.

Referring to the drawings, the numeral 1 is used to designate in generala door having l the usual knob opening 2 formed therethrough. A squarestem 3 extends through Serial No. 252,898.

the opening 2 and is arranged to latch mechanism of any suitable form inthe well known manner. As the latch mechanism forms no part of thepresent invention, and as my improved knob construction is adapted foruse with substantially all forms of mechanism wherein a square knobshaft is used, no disclosure of such latch mechanism is herein necessaryand I have omitted such mechanism from the drawings.

The square stem 3 is threaded upon its corners as at 4- to receivebushing 6' threaded thereon. Bearing plates 7 are secured over the endsof the opening 2 by means of screws or other suitable securing members8. Bearing flanges 9 are formed upon the plates 7 and arranged to extenda slight distance into the ends of the opening 2, said flanges beingarranged to rotatably engage and support the bushings 6, preferabl bymeans of reduced bearing portions 6 ormed upon the inner ends thereof.

Rosettes 11 are fitted over the outer ends of the bushings 6 to coversaid bushings and the plates 7. The rosettes have central openingslitting around the outer ends of the bushings and permitting thebushings to be freely rotated therein. The outer ends of the rosettesare arranged substantially flush with the ends of the bushings, and theouter diameter of the rosettes extends well outside of the outerdiameter of the bearing plates 7 so that said plates and the bushingsare fully covered by the rosettes. The rosettes are preferablyconstructed from glass and have a plurality of recesses 12 formed uponthe inner side thereof to receive and engage outwardly extending lugs 13formed upon the plates 7 whereby the rosettes are held against turning.

Knobs 14, preferably made of glass, are mounted upon the outer ends ofthe stem 3.. The knobs have Aaxial openings 16 formed therethrough, theinner ends of the openings being enlarged as at 17 to fitover the endsof the stem 3. Securing members 18 are applied through the openings 16and threaded into the ends of the stem 3 to secure the knobs upon saidstem. i

A washer 19 having a square opening 21 formed therein is fitted onto thestem 3 between the inner end of each knob 14 and the adjacent bushing 6.A plurality of ribs 22 are formed upon the washers to engagecorresponding recesses 23 formed in the inner end of the knob 14 and toseat upon ribs 24 formed upon the outer ends of the bushings 6. TheWashers 19 are arranged to be held against the ends of the bushings 6and to exlo tend outwardly and slightly overhang the ad- .acentrosettes, said Washers being clamped etween the knobs 14 and thebushings 6 when the securing members 18 are screwed tightly into theends of the stem 3. In Fig. 1 of the u drawings, the section is takenthrough the apex of ribs 22 o1' the washers 19 to show the manner inwhich said ribs engage the ribs 24 of the bushing 6 and the recesses 23of the knob, the body portions of the Washers seating Hush upon the endsof the bod portions of the bushings and the adjacent edlges ot therosettes.

In operation, the bushings 6, engaging the bearing plates 7 form asubstantial bearing g for the knobs and stem and avoid any objectionableside play or axial looseness of the knobs and stem. W'hen the members 18are screwed through the knobs into the ends of the stem, the knobs aremoved to press the washers 19 against the ends of the bushings, the ribs22 being engaged and held by the recesses 23 in the knobs whereby theknob is prevented from turning relative to the stem and insuring thatany turning movement imparted to the knob will be imparted to the stern3 and the bushings 6. At the same time, the overhanging edges of thewashers engage the outer ends of the rosettes and hold thern seatedagainst the sides of the door and in engagement with the lugs 13. As therosettes fit onto the outer ends of the bushings, which in turn are heldagainst side and axial movement by the bearing plates 7, no furthercuring means are necessary. This permits the use of a glass rosettematching with the glass knobs 12 and presenting an all-glass appearancewhich is very attractive and which is easily kept clean and sanitary.

When either knob 14 is turned, the turiiinf.r movement is impartedthrough the ribs 22 to the adjacent washer 19 which in turn turns thestern 3. The rosette is held against rotation by the lu vs 13.

If it is desire to remove the stem il from the door, this may beaccomplished by merely removing the securing member 18 from one of theknobs, thereby permitting said knob and the adjacent rosette and bushingto be removed, andthe stem Withdrawn from the opposite side of the doorWithout removing the knob from the opposite end of the stemY While Ihave illustrated the preferred embodiment of my invention, the device issub` ject to modification in numerous details of construction andwithout departing from the spirit of my invent-ion. I therefore desireto avail myself of all modifications which may At'all within the scopeof the appended claims.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is- 1. A door knob comprising` a square knobstem arranged to extend through an opening formed through a door;bushings threaded onto the stem and provided with ribs Yformed upon theouter ends thereof; bearing plates secured upon the door and engagingthe bushings; rosettes covering the bushings and bearing plates; knobsmounted upon the ends oii the stem washers mounted between the knobs andthe bushings said washers jbeing provided with ribs pressed outwardly'from one face of each washer and forming corresponding recesses in theopposite tace, said ribs seating upon the corresponding ribs formed uponthe adjacent ends of the bushing and engaging recesses formed upon theinner ends of the knobs; and means extending through the knobs andengaging the ends ot the stem for securing said knobs upon the stem andclamping the washers; between the knobs and the bushings.

2. A door knob comprising a square knob stem arranged to extend throughan opening formed throufih a door; bushings threaded onto the stem andprovided with ribs formed upon the outer ends thereof: bearing platessecured upon the door and having bearing fianges extending into the endsof the openings in the door to rotatably support the bushings; rosettesfitted over the bearing.r plates and bushings, and having their outerfaces substantially Hush with the ends of the eef-ushings; knobs mountedupon the ends ot' the stem; washers mounted between the knobs reidbushings, said washers engaging the rosettes around the bushings, andbeing provided with ribs pressed outwardly from one face of each washerand Jforming corresponding recesses in the opposite face, said ribsseating upon the corresponding ribs formed upon the adjacent en l' ofthe bushing and engaging recesses in i inner ends ot' the knobs: andmeans extending through the knobs and engaging the ends oiE the stem'for securing the knobs upon the stem and clamping the washers betweenthe knobs and the bushings to retain the rosettes and to impart turningmovement from the knobs to the stem and bushings.

3. A door knob comprising a square knob stem arra? 1d to extend throughan opening formed thi-ugh a door; bushings threaded onto the stem;bearing plates secured upon the door and having hearing flangesextending into the ends of the openings in the door to rotatably support1the bushings; rosettes titted over the bearing plates and bushings, andhaving outer faces substantially -tlush with the ends ot the bushings;knobs mounted upon the ends of the stem; washers mounted between theknobs and bushings, said washers engaging the rosettes around thebushings, and being provided with ribs engaging 'l recesses in the innerends of the knobs; means extending through the knobs and engaging theends of the stern for securing the knobs upon the stem and clamping thewashers between the knobs and the bushings to retain the rosettes and toimpart turning movement from the knobs to the stem and bushings; andlugs extending outwardly from the bearing plates and engaging recessesin the backs of the rosettes to prevent rotation of said rosettes withthe knobs.

4. A door knob comprising a square knob stem arranged to extend throughan opening formed through a door; bushings threaded onto the stem andprovided with ribs formed zo upon the outer ends thereof; bearing platessecured upon the door and having bearing iianges rotatably engaging thebushings; ro-

settes fitted over the bearing plates and bushings and having theirouter ends substantial- 25 ly Hush with the ends of the bushings; knobsmounted upon the ends of the stem; washers having square holes engagingthe stem between the knobs and the bushings, said washers being arrangedto overhang the adjacent edges of the rosettes and being provided withribs pressed outwardly from one face of each washer and formingcorresponding recesses in the opposite tace, said ribs seat-ing upon thecorresponding ribs formed upon the adjacent ends of the bushing andengaging corresponding recesses iormed in the inner ends of the knobs;and securing members extend ing axially through the knobs and threadedinto the ends of the stem 'for securing said knobs upon the stem andclamping the washers between the knobs and bushings to retain therosettes and to impart turning movement from the knobs to the bushingsand stern.

5. A door knob comprising a square knob stem arranged to extendthroughan opening formed through a door; bushings threaded onto the stem;bearing plates secured around the ends of the opening through the doorto rotatably engage the bushings; glass rosettes fitted over the bearingplates and bushings upon opposite sides of the door, the outer ends ofthe rosette being substantially flush with the outer ends of thebushings; washers having square holes engaging the stem adjacent thebushings, said washers being of a diameter slightly greater than thebushings to overhang and retain the rosettes; glass knobs mounted uponthe outer ends of the stem; ribs formed upon the washers to engagecorresponding recesses formed in the inner ends of the knobs whereby theknobs and stein are caused to turn together; securing members extendingaxially through the knobs and threaded into the ends of the 65 stern toretain the knobs and clamp the washnature.

ELLING ELLINGSON.

